.per-sidebar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    background: rgba(15, 23, 42, 0.96);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-top-left-radius: 24px;
    border-top-right-radius: 24px;
    box-shadow: 0 -8px 28px rgba(15, 23, 42, 0.18);
    padding: 10px 10px calc(10px + env(safe-area-inset-bottom, 0px));
}

.per-sidebar__brand {
    display: none;
}

.per-sidebar__title {
    margin: 0;
    font-size: 22px;
    font-weight: 800;
    color: #f8fafc;
    letter-spacing: -0.02em;
}

.per-sidebar__subtitle {
    margin: 6px 0 0;
    font-size: 13px;
    color: #94a3b8;
}

/* MOBILE SWIPE NAV */
.per-sidebar__nav {
    display: flex;
    align-items: stretch;
    gap: 8px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
}

.per-sidebar__nav::-webkit-scrollbar {
    display: none;
}

.per-sidebar__link {
    flex: 0 0 82px;
    min-height: 62px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 6px;
    border-radius: 18px;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.76);
    background: transparent;
    transition: all 0.22s ease;
    text-align: center;
    scroll-snap-align: start;
    user-select: none;
    -webkit-user-select: none;
}

.per-sidebar__icon {
    font-size: 18px;
    line-height: 1;
}

.per-sidebar__text {
    font-size: 11px;
    font-weight: 600;
    line-height: 1.2;
    word-break: break-word;
}

.per-sidebar__link:hover,
.per-sidebar__link:focus-visible,
.per-sidebar__link.active {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    transform: translateY(-1px);
}

.per-sidebar__link--logout {
    color: #fecaca;
}

.per-sidebar__link--logout:hover,
.per-sidebar__link--logout:focus-visible,
.per-sidebar__link--logout.active {
    background: rgba(239, 68, 68, 0.14);
    color: #ffffff;
}

@media (max-width: 767px) {
    .app {
        display: block;
    }

    .main {
        width: 100%;
        padding: 18px 14px 104px;
    }
}

@media (max-width: 480px) {
    .per-sidebar__link {
        flex: 0 0 76px;
        min-height: 60px;
    }

    .per-sidebar__text {
        font-size: 10px;
    }
}

@media (min-width: 768px) {
    .app {
        display: flex;
        align-items: stretch;
    }

    .per-sidebar {
        top: 0;
        bottom: 0;
        left: 0;
        right: auto;
        width: 280px;
        height: 100vh;
        border-top-left-radius: 0;
        border-top-right-radius: 0;
        border-bottom-right-radius: 28px;
        padding: 24px 18px;
        box-shadow: 10px 0 30px rgba(15, 23, 42, 0.10);
        background: linear-gradient(180deg, #0f172a 0%, #172033 100%);
    }

    .per-sidebar__brand {
        display: block;
        padding: 10px 12px 22px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        margin-bottom: 18px;
    }

    .per-sidebar__nav {
        display: flex;
        flex-direction: column;
        gap: 10px;
        overflow-y: auto;
        overflow-x: hidden;
        padding-right: 4px;
        scrollbar-width: thin;
    }

    .per-sidebar__link {
        flex: none;
        min-height: 52px;
        flex-direction: row;
        justify-content: flex-start;
        gap: 12px;
        padding: 13px 14px;
        border-radius: 16px;
        text-align: left;
    }

    .per-sidebar__icon {
        width: 22px;
        min-width: 22px;
        text-align: center;
        font-size: 18px;
    }

    .per-sidebar__text {
        font-size: 14px;
        font-weight: 600;
    }

    .per-sidebar__link:hover,
    .per-sidebar__link:focus-visible,
    .per-sidebar__link.active {
        background: rgba(245, 158, 11, 0.16);
        color: #ffffff;
        transform: translateX(3px);
    }

    .main {
        flex: 1;
        margin-left: 280px;
        min-width: 0;
        padding: 28px 28px 32px;
    }
}

@media (min-width: 1200px) {
    .per-sidebar {
        width: 300px;
    }

    .main {
        margin-left: 300px;
        padding: 32px;
    }
}

.per-sidebar__nav.is-dragging {
    cursor: grabbing;
}